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• W3156276413 abstract "The pervaporation membrane technology integrated with catalytic function improves the conversion of esterification reactions by integrating reaction and separation processes in a single step. Optimizing the structure of the catalytic layer of the pervaporation membrane can effectively reinforce its enhancement effect on the esterification reaction. Here, a porous catalytic layer with high catalytic activity and low mass transfer resistance was successfully developed by the immersion phase inversion. The sulfonated poly(vinyl alcohol) (SPVA) catalytic layer prepared by cross-linking poly(vinyl alcohol) (PVA) with 5-sulfosalicylic acid (SSA) was coated on a graphitic carbon nitride-sodium alginate (g-C3N4-SA) membrane with polyacrylonitrile (PAN) as the support. The prepared pervaporation membranes with a porous catalytic layer were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS). The membrane catalytic performance was evaluated in the esterification reaction of acetic acid with ethanol in a pervaporation catalytic membrane reactor (PVCMR). As a result, the acetic acid conversion was up to 98.4% in 12 h at 75 °C with 20% molar fraction of the catalyst. Compared with the batch reaction (BR) under the same operating conditions, the acetic acid conversion rate was greatly improved by 24.4%. After five runs, the membrane still maintained excellent stability. In addition, the resistance-in-series model was considered to analyze the mass transfer resistance of the membrane. The results indicated that the porous catalytic layer had a lower mass transfer resistance of 1.38 × 105 s·m–1, accounting for only 46.1% of the overall resistance, while the dense catalytic layer accounted for 66.9%. Therefore, the pervaporation membrane with a porous catalytic layer presented great ability for enhancing the esterification reaction of acetic acid with ethanol." @default.
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• W3156276413 date "2021-04-14" @default.
• W3156276413 modified "2023-10-16" @default.
• W3156276413 title "Novel SPVA/g-C₃N₄-SA/PAN Pervaporation Membranes with Porous Catalytic Layers for Esterification Enhancement" @default.
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• W3156276413 doi "https://doi.org/10.1021/acs.iecr.1c00451" @default.
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